BT169EG-T92-B from UTC(Unisonic Tech), in a TO-92. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	K	passive	Cathode of the SCR; main current return terminal, with the device rated for 0.8 A RMS on-state current.
2	G	input	Gate trigger input; peak gate voltage 5 V, peak reverse gate voltage 5 V, peak gate current 1 A, gate trigger current 25 µA typ to 200 µA max.
3	A	passive	Anode of the SCR; repetitive peak off-state voltage 500 V for the BT169E.

Key specifications

Parameter	Value
Manufacturer	UTC(Unisonic Tech)
Package	TO-92
Category	Transistors
Pins	3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Repetitive Peak Off-State Voltage	VDRM,VRRM			500	V	BT169E	3
Peak Gate Voltage	VGM			5	V		3
Peak Reverse Gate Voltage	VRGM			5	V		3
Peak Gate Current	IGM			1	A		3
Average On-State Current	IT(AV)			0.5	A	Half Sine Wave, TLEAD≦83C	3
RMS On-State Current	IT(RMS)			0.8	A	All Conduction Angles	3
Non-Repetitive Peak On-State Current	ITSM			8	A	t=10ms, Half Sine Wave, TJ=25C prior to surge	3
Non-Repetitive Peak On-State Current	ITSM			9	A	t=8.3ms, Half Sine Wave, TJ=25C prior to surge	3
I2t for Fusing	I2t			0.32	A2S	t=10ms	3
Repetitive Rate of Rise of On-State Current	dIT/dt			50	A/μs	After triggering, ITM=2A, IG=10mA, dIG/dt=100mA/μs	3
Peak Gate Power	PGM			2	W		3
Average Gate Power	PG(AV)			0.1	W	Over any 20 ms period	3
Junction Temperature	TJ			125	°C		3
Storage Temperature	TSTG	-40		150	°C		3
Thermal Resistance Junction to Ambient	θJA		180		°C/W	TO-92, pcb mounted, lead length=4mm	3
Gate Trigger Current	IGT		25	200	μA	VD=12V, IT=10 mA, gate open circuit	4
Latching Current	IL		2	6	mA	VD=12V, IGT=0.5mA, RGK=1k	4
Holding Current	IH		2	5	mA	VD=12V,IGT=0.5mA, RGK=1k	4
On-State Voltage	VT		1.2	1.35	V	IT=1A	4
Gate Trigger Voltage	VGT		0.3	0.8	V	VD=12V, IT=10mA, gate open circuit	4
Gate Trigger Voltage	VGT	0.2			V	VD=VDRM(MAX), IT=10mA, TJ=125C, gate open circuit	4
Off-State Leakage Current	ID,IR		0.05	0.1	mA	VD=VDRM(MAX), VR=VRRM(MAX), TJ=125C, RGK=1k	4
Critical Rate of Rise of Off-State Voltage	dVD/dt	500	800		V/μs	VDM=67% VDRM(MAX), TJ=125C, exponential waveform, RGK=1k	4
Gate Controlled Turn-On Time	tgt		2		μs	ITM=2A, VD=VDRM(MAX), IG=10mA, dIG/dt=0.1A/μs	4
Circuit Commutated Turn-Off Time	tq		100		μs	VD=67% VDRM(MAX), TJ=125C, ITM=1.6A, VR=35V, dITM/dt=30A/μs, dVD/dt=2V/μs, RGK=1k	4

CAD (KiCad official)

Symbol: BT169EG-T92-B
Footprint: Package_TO_SOT_THT:TO-92_Inline
3D model: TO-92 (KiCad packages3D, STEP)
3D model files: bt169eg-t92-b-etched.step / bt169eg-t92-b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bt169eg-t92-b.step / bt169eg-t92-b.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: UTC(Unisonic Tech) datasheet (7 pp, sha256 68b2be2ef6bcf7dd, retrieved 2026-10-31, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF

BT169EG-T92-B

Verified BT169EG-T92-B

Verification log 1 record

3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

README